was from May 1971 to December 1971, again supporting 4 RAR. 104th Field Battery was the last Australian Field Artillery unit to leave Vietnam. On returning to Australia the Battery was located at Coral Lines Ingleburn with 12th Field Regiment. Post-Vietnam For a short period time the battery participated in peacetime training and support activities, but with the formation of 8th/12th Medium Regiment, the Battery was disbanded in December 1973. In November 1977 the Battery was re-raised as part of the 8th /12th Medium regiment with M2A2 (105mm) guns. Soon after the re-raising, the battery took part in its most important peacetime action. In February 1978, following a bomb blast at the Hilton Hotel in Sydney, the decision was made to call in the Army to secure Bowral, the venue for the Commonwealth Heads of Government Regional Meeting. However, on 15 June 1979 the battery was once again formally disbanded. Recent history In October 1985 the battery was re-raised as an Army Reserve Unit, as part of 1st Field Regiment in Brisbane, and again issued with the 105mm M2A2 Howitzer. The M2A2 was replaced in October 1990, with the 105mm L118/L119 Hamel Gun. In January 1992 the Regiment converted to the Ready Reserve Scheme, attracting a large increase in numbers to the battery and Regiment. The scheme involved members undertaking a contract to work full-time for 12 months, then work 50 days a year for the next four years. In December 1996, the Ready Reserve Scheme was completed, however the Battery continued to foster 'Ready Reserve Soldiers' until 2000, when the Battery assumed the composition of a general reserve unit. 104 Field Battery was disbanded on 1 July 2005 during a parade held by 1st Field Regiment to retask 105 Field Battery to a Medium Battery role. Personnel were transferred to the reserve element of 105 Medium Battery and to other batteries within the regiment. As part of an Army wide restructuring of Artillery units, the Battery was re- raised in 2011 as an observation battery. In 2014 it was again restructured as a conventional battery with Observers, CP and M777 Gun line. It is currently building its manning to be a full sized battery in the coming years. References External links Official Battery Website 1 Military units and formations established in 1916 Military units and formations disestablished in 2005 1916 establishments in Australia